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Canon EF 40mm f/2.8 STM Lens

You Pay: $199.00
Product Highlights
  • EF Mount Lens
  • Aperture Range: f/2.8-22
  • Aspherical Lens Element
  • STM Stepping Motor for Smooth, Silent AF
  • Lightweight & Compact: 4.6 oz, 1" Long
  • Lens Coatings Reduce Ghost & Flare
  • 7-Blade Circular Diaphragm
  • Minimum Focus Distance: 11.81"
  • 64mm Equivalent on APS-C Cameras
  • STM Focus in Video on Select EOS Rebels

This EF 40mm f/2.8 STM Lens from Canon is a welcome addition to Canon's line-up of EF lenses--a light, inconspicuous "normal" lens. At a featherweight 4.6 oz, this is one of the lightest lenses in the EF family. It's less than one inch long, so it will never draw unwelcome attention to you when you're shooting in public. A bright f/2.8 maximum aperture allows you to shoot under pretty much any lighting conditions, and the sophisticated lens configuration, including one aspherical element, guarantees high image quality from the center to the edge of the frame. The optimized coatings used in constructing the lens greatly reduce ghosting and flare, and deliver superb color balance.

STM functionality provides quiet, smooth and continuous autofocus during video operation (continuous video autofocus only when used with the Canon EOS 70D, Rebel T4i and T5i). The circular aperture formed by 7 diaphragm blades combined with the wide aperture can give you beautiful bokeh--the out-of-focus background areas of your images. This 40mm lens will give you a view equivalent to 64mm when used on a camera with an APS-C sensor, and is able to focus as close as 11.81".

Newly developed STM technology for smooth and quiet continuous AF while shooting video (continuous video autofocus only supported with EOS 70D, Rebel T4i and T5i cameras).
Lightweight and unobtrusive 4.6 oz lens is less than one inch long.
Bright f/2.8 aperture is effective in low light situations and provides shallow depth of field focus control.
High image quality from the center to the periphery thanks to its advanced lens configuration including one aspherical element.
Optimized coatings that minimize ghosting and flare while providing exceptional color balance
A circular 7-blade aperture for beautiful soft-focus backgrounds
Short minimum focusing distance of only 11.81"
Mounted on a camera with an APS-C sensor, this lens offers a view similar to a 64mm lens in the 35mm format.
Performance
Focal Length 40mm
Comparable APS-C Focal Length: 64 mm
Aperture Maximum: f/2.8
Minimum: f/22
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Canon (APS-C)
Angle of View 57° 30'
Tilt/Shift None
Minimum Focus Distance 11.81" (30.00 cm)
Magnification 0.18x
Elements/Groups 6/4
Diaphragm Blades 7
Features
Image Stabilization No
Autofocus Yes
Tripod Collar No
Environmental
Physical
Filter Thread Front:52 mm
Dimensions (DxL) Approx. 2.7 x 0.9" (6.86 x 2.29 cm)
Weight 4.6 oz (130 g)
Canon EF 40mm f/2.8 STM Lens
  • E-52 II Lens Cap for 52mm EF-M Lens
  • Lens Dust Cap E (Rear)
  • Limited 1-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    CanonEF 40mm f/2.8 STM Lens
     
    4.6

    (based on 602 reviews)

    Ratings Distribution

    • 5 Stars

       

      (392)

    • 4 Stars

       

      (186)

    • 3 Stars

       

      (20)

    • 2 Stars

       

      (3)

    • 1 Stars

       

      (1)

    97%

    of respondents would recommend this to a friend.

    Pros

    • Lightweight (398)
    • Fast / accurate auto-focus (237)
    • Consistent output (205)
    • Easily interchangeable (202)
    • Nice bokeh (191)

    Cons

    • Slow focus (44)
    • Poor in low light (30)
    • Weak casing (15)
    • Tough to attach (10)
    • Slow autofocus (3)

    Best Uses

    • Low light (214)
    • Landscape/scenery (212)
    • Video (137)
    • Weddings (112)
    • Night photography (99)
      • Reviewer Profile:
      • Photo enthusiast (184), Semi-pro photographer (100), Pro photographer (63), Casual photographer (46), Photography student (20)
      • Was this a gift?:
      • No (384), Yes (19)

    Most Liked Positive Review

     

    Excellent value, a pleasure to use

    Great lens. Quite sharp. Accurate and fast focus. It's a joy to use. Of course, it delivers in terms of being compact. I'm using it on a 1.6x camera, so it's...Read complete review

    Great lens. Quite sharp. Accurate and fast focus. It's a joy to use. Of course, it delivers in terms of being compact. I'm using it on a 1.6x camera, so it's a somewhat awkward focal length. I look forward to the day I get to use it on a full frame. But you all know it's 40mm, so onward.

    The mounting ring is really tight with my camera, and I have this feeling that I'm grinding something down when I mount or remove the lens. I don't think it hurts anything, so that's fine with me.

    Unfortunately, the lens data is not pre-loaded on my t4i. But the image quality is so good that you hardly would ever need it. I will include a couple of photos. Both are unedited and were taken with in-camera settings neutral, and sharpness set to 0. The one of the leaf was taken with the lens wide open. You can see how quickly it passes in and out of focus. The background light shows the chromatic aberration about as badly as it ever gets, which is hardly at all! You can just barely see the opposing red vs. green fringe in the light. The one of the flowers is also wide open at 2.8, also neutral and unsharpened and unedited. With even the most light-handed increase of sharpness and contrast, stunningly crisp images, as well as softer ones, are at your disposal, and all at a ridiculously low price. I really like it, and it manages to jostle my other lenses off the camera which, on paper, should have much more versatility and utility.

    Another note: The STM focusing is not silent. This is fine with me, but for those of you who might be interested, read on. In AF, there's a soft whine that it gives off, louder than my USM lens but quieter than my kit lens. In manual mode, the focus ring is, as many have pointed out, NOT a mechanically engaged gear, but rather an electronic input. When turning the ring medium to fast, it makes a lower and slightly softer hum. When turning the ring slowly, it makes a rather disturbing groan. However, when you turn it REALLY slowly, the focus moves with an amazingly controlled slow creep, and it's _completely silent_. That could come in handy for some nice cinematic effects.

    VS

    Most Liked Negative Review

     

    Great things can come in small sizes

    I got this lens so I could take some more closeup candid photos of family on my 10D. It's been great. The low profile of it makes it more convenient in tight spaces and...Read complete review

    I got this lens so I could take some more closeup candid photos of family on my 10D. It's been great. The low profile of it makes it more convenient in tight spaces and for carrying around. With its short macro distance I've also been taking some nice pictures of flowers.

    The autofocus is a bit slow in my mind, but it's accurate. The lack of a distance meter is not too big of a problem. Its size made me a little wary about screwing it into my camera without breaking it, but it's a solid fit.

    Reviewed by 602 customers

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    5.0

    My always on lens

    By Bruno Almeida

    from Brazil

    About Me Photo Enthusiast

    Verified Buyer

    Pros

    • Consistent Output
    • Fast / accurate auto-focus
    • Lightweight
    • Nice Bokeh

    Cons

      Best Uses

      • Indoors/Low Light
      • Landscape/Scenery
      • Night Photography
      • Weddings/Events

      Comments about Canon EF 40mm f/2.8 STM Lens:

      Traveling light is the only way to go - and the GREAT pancake lens is one of only lenses I would need on vacation.

      • Was this a gift?:
      • No

      Share this review

       
      5.0

      Nice little Lens

      By wyobanty

      from Cheyenne, WY

      About Me Photo Enthusiast

      Verified Buyer

      Pros

      • Easily Interchangeable
      • Fast / accurate auto-focus
      • Lightweight
      • Strong Construction

      Cons

        Best Uses

          Comments about Canon EF 40mm f/2.8 STM Lens:

          I have just started using this lens for certain photo oportunities and so far like it. I plan on using it to take my son's senior pictures next year. Nice little camera to have in my bag.

          • Was this a gift?:
          • No

          Share this review

           
          4.0

          Tiny power lens

          By Bobbie

          from Sausalito, CA

          About Me Photo Enthusiast

          Verified Buyer

          Pros

          • Consistent Output
          • Easily Interchangeable
          • Fast / accurate auto-focus
          • Lightweight

          Cons

            Best Uses

            • Landscape/Scenery
            • Macro Photography
            • Night Photography

            Comments about Canon EF 40mm f/2.8 STM Lens:

            This little darling has made my SLR suddenly quite portable. It doesn't zoom but my computer does that quite well. I like the photos I've taken so far, but have yet to see a major difference between it and my old kit lens. I gave it one less star because of this, but that may not be fair because I haven't sufficiently tested it yet.

            • Was this a gift?:
            • No

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            5.0

            Good money spent

            By dunamis

            from Alabama

            About Me Semi-pro Photographer

            Verified Buyer

            Pros

            • Durable
            • Lightweight
            • Rugged

            Cons

              Best Uses

                Comments about Canon EF 40mm f/2.8 STM Lens:

                Great bang for you money.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Stepping back to move ahead

                By sparkyhamlin

                from cortland, ny

                About Me Photo Enthusiast

                Verified Buyer

                Pros

                • Consistent Output
                • Durable
                • Easily Interchangeable
                • Fast / accurate auto-focus
                • Lightweight

                Cons

                  Best Uses

                  • Indoors/Low Light
                  • Landscape/Scenery
                  • Macro Photography
                  • Night Photography
                  • Video

                  Comments about Canon EF 40mm f/2.8 STM Lens:

                  The 40mm had become my walk around lens. It stays on my camera. Going to a single mm lens takes me back to the old film days. I have to frame my subject by moving around for the best shot. The lens moves smoothly as well in video mode. It is quiet and smooth. I love it.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  Love This Lens!

                  By Matt Blasing

                  from Albuquerque, NM

                  About Me Pro Photographer

                  Verified Buyer

                  Pros

                  • Consistent Output
                  • Fast / accurate auto-focus
                  • Lightweight
                  • Nice Bokeh

                  Cons

                    Best Uses

                      Comments about Canon EF 40mm f/2.8 STM Lens:

                      I bought this lens to downgrade from my FF Pro DSLR and have something not as heavy to carry around with me. Paired with my new (B&H used) Canon 100D, it's my favorite lightweight setup to date, and I use it everyday. The depth of field is great, it's inconspicuous, and it's fast. Wonderful lens!

                      • Was this a gift?:
                      • No

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                      (0 of 2 customers found this review helpful)

                       
                      2.0

                      Vignettes Bad

                      By bchatt

                      from Greater Atlanta area

                      About Me Pro Photographer

                      Verified Reviewer

                      Pros

                      • Lightweight

                      Cons

                      • Weak Casing

                      Best Uses

                        Comments about Canon EF 40mm f/2.8 STM Lens:

                        Need this focal length and auto focus for certain type of product photographed with a white background. Vignettes Bad. Will have to look for better optics. Not to Canon Standards.

                        • Was this a gift?:
                        • No

                        Share this review

                         
                        5.0

                        Great product and service again!

                        By Calcman

                        from Tampa, FL

                        Verified Buyer

                        Comments about Canon EF 40mm f/2.8 STM Lens:

                        Fast delivery, great product. Thanks.

                        Share this review

                         
                        5.0

                        Excellent lens at bargain price

                        By dwight

                        from austin, texas

                        About Me Photo Enthusiast

                        Verified Buyer

                        Pros

                        • Consistent Output
                        • Easily Interchangeable
                        • Fast / accurate auto-focus
                        • Lightweight
                        • Nice Bokeh

                        Cons

                          Best Uses

                          • Landscape/Scenery
                          • Weddings/Events
                          • Wildlife Photos

                          Comments about Canon EF 40mm f/2.8 STM Lens:

                          I cannot believe how inexpensive this lens was in comparison to the great results it gives.

                          • Was this a gift?:
                          • No

                          Share this review

                           
                          4.0

                          Sleek, Speedy, & Economical

                          By terence671

                          from Guam, Mariana Islands

                          About Me Semi-pro Photographer

                          Verified Buyer

                          Pros

                          • Durable
                          • Lightweight

                          Cons

                          • Poor in Low Light

                          Best Uses

                          • Video
                          • Weddings/Events

                          Comments about Canon EF 40mm f/2.8 STM Lens:

                          I love just how flat this lens is. It feels so light and easy to carry around. It's pretty fast although sometimes the focus is off. For the price I get it's very affordable.

                          • Was this a gift?:
                          • No

                          Share this review

                           
                          5.0

                          Not Just A Novelty Lens

                          By Radiant Amar

                          from Brooklyn

                          Comments about Canon EF 40mm f/2.8 STM Lens:

                          I bought this lens to achieve a light weight set up for my brushless gimbal. I was blown away by the image quality! I own a few L series lenses and this lens fits in well. It literally feels as if there is no lens on your camera body.

                          Pros:
                          Light weight
                          Great image quality
                          Fast aperture
                          Inexpensive

                          Cons:
                          Medium speed autofocus locking (not slow or fast)

                          Share this review

                           
                          5.0

                          Great little lens

                          By MinAZ

                          from Phoenix, AZ

                          About Me Photo Enthusiast

                          Verified Buyer

                          Pros

                          • Lightweight

                          Cons

                            Best Uses

                            • Weddings/Events

                            Comments about Canon EF 40mm f/2.8 STM Lens:

                            With all the hype over the nifty-fifty, this little gem tends to be overlooked. Although not quite as fast as the 50/1.8, it does have two advantages: it is more compact, and it has a potentially more useful focal length for crop sensors (depending on what you are shooting). And for some, the STM motor might also make a difference (it doesn't for me so I can't speak to it). Granted 10mm doesn't seem like much and probably most already own the 50mm/1.8, so it may not be for everyone. Do not underestimate the 10mm difference on a crop sensor however - it does make a difference for some applications like street photography.

                            • Was this a gift?:
                            • No

                            Share this review

                            (3 of 3 customers found this review helpful)

                             
                            5.0

                            THE MIGHTY MINI 40.

                            By Johnny D

                            from Cincinnati, OH

                            About Me Semi-pro Photographer

                            Verified Buyer

                            Pros

                            • Consistent Output
                            • Lightweight
                            • Nice Bokeh

                            Cons

                              Best Uses

                              • Indoors/Low Light
                              • Landscape/Scenery
                              • Night Photography
                              • Video

                              Comments about Canon EF 40mm f/2.8 STM Lens:

                              This small, fast lens is an amazing little guy. If my 70-200 isnt on my Canon, THIS lens is. its not intimidating like the 70-200 is, which is great especially when taking pictures of people who aren't so fond of photos of themself. I havnet had issues of it autofocusing, and its super quiet. Its so small, I actually recommend NOT getting the UV filter, it adds 25% more length to the lens! haa. The only thing Im not a huge fan of is the focus ring. Its electronic meaning I cant use a Macro attachment, and expect it to focus.

                              It takes up hardly any space in my lens. and its not hard to do a portrait shoot with JUST this little lens.

                              • Was this a gift?:
                              • No

                              Share this review

                               
                              5.0

                              Canon 40mm

                              By EZ Buyer

                              from California

                              Comments about Canon EF 40mm f/2.8 STM Lens:

                              Great lens. Great service

                              Share this review

                               
                              4.0

                              Great indoor lens

                              By Carole

                              from Connecticut

                              About Me Photo Enthusiast

                              Verified Buyer

                              Pros

                              • Durable
                              • Easily Interchangeable
                              • Strong Construction

                              Cons

                                Best Uses

                                  Comments about Canon EF 40mm f/2.8 STM Lens:

                                  This lens is great for a crop sensor camera, especially for indoor photography so that you don't have to back too far from the subject. It is comparable to the 50mm 1.8, although I find that it is not quite as sharp, and the bokeh not quite as pretty. Because it only lowers to 2.8 it is not as good for low light photography as the 50mm. The lens itself is solid metal rather than plastic parts. Overall great lens for the price.

                                  • Was this a gift?:
                                  • No

                                  Share this review

                                   
                                  4.0

                                  good value!

                                  By MrP

                                  from Los Angeles, CA

                                  About Me Photo Enthusiast

                                  Verified Buyer

                                  Pros

                                  • Cost
                                  • Nice Bokeh
                                  • Quiet
                                  • Size

                                  Cons

                                    Best Uses

                                      Comments about Canon EF 40mm f/2.8 STM Lens:

                                      The STM quiet focus is good for video and the f/2.8 is nice for the depth-of-field. Very compact on the camera. Not as good a value as the 50mm f/1.8 overall, but pretty close and much better for autofocus video.

                                      • Was this a gift?:
                                      • No

                                      Share this review

                                       
                                      4.0

                                      Nice little lens

                                      By Kev in Sunnyvale

                                      from Sunnyvale, CA

                                      About Me Casual Photographer

                                      Verified Buyer

                                      Pros

                                      • Consistent Output
                                      • Durable
                                      • Nice Bokeh
                                      • Strong Construction

                                      Cons

                                        Best Uses

                                        • Landscape/Scenery
                                        • Weddings/Events

                                        Comments about Canon EF 40mm f/2.8 STM Lens:

                                        Walk around lens.

                                        • Was this a gift?:
                                        • No

                                        Share this review

                                         
                                        5.0

                                        Pancake as they call it

                                        By Jon

                                        from Milwaukee

                                        Comments about Canon EF 40mm f/2.8 STM Lens:

                                        Pretty good lens sharp and quite great for steady video specially if your slr have auto focus . Small light and cheap cant go wrong

                                        Share this review

                                         
                                        4.0

                                        Walk Around lens

                                        By Steve K

                                        from Elmwood Park, NJ

                                        About Me Pro Photographer

                                        Verified Buyer

                                        Pros

                                        • Durable
                                        • Lightweight
                                        • Rugged
                                        • Strong Construction

                                        Cons

                                          Best Uses

                                            Comments about Canon EF 40mm f/2.8 STM Lens:

                                            I really enjoy using this lens and will keep it on my camera as much as possible! It's a pleasure using something this small- it actually makes the MKii feel less obtrusive for street shooting.
                                            I would have given it 5 stars, but the drawbacks that I've found are 1) the autofocus is kind of slow. 2) I wish it were a little sharper. 3) 1.8 would have been a whole lot better than 2.8.
                                            Even with the drawbacks, at this great price, this is a go to lens. I challenge myself by going out with only this lens on a camera strap- no other lenses; freedom!

                                            • Was this a gift?:
                                            • No

                                            Share this review

                                             
                                            5.0

                                            Nice bokeh for the price!

                                            By Banan

                                            from PA

                                            Verified Buyer

                                            Comments about Canon EF 40mm f/2.8 STM Lens:

                                            Very happy with it.

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